43712643 has 8 divisors (see below), whose sum is σ = 62766928. Its totient is φ = 26900064.

The previous prime is 43712621. The next prime is 43712653. The reversal of 43712643 is 34621734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43712643 - 2⁶ = 43712579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43712643.

It is not an unprimeable number, because it can be changed into a prime (43712653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560380 + ... + 560457.

It is an arithmetic number, because the mean of its divisors is an integer number (7845866).

Almost surely, 2^43712643 is an apocalyptic number.

43712643 is a deficient number, since it is larger than the sum of its proper divisors (19054285).

43712643 is a wasteful number, since it uses less digits than its factorization.

43712643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120853.

The product of its digits is 12096, while the sum is 30.

The square root of 43712643 is about 6611.5537508214. The cubic root of 43712643 is about 352.2646162580.

Subtracting from 43712643 its reverse (34621734), we obtain a palindrome (9090909).

The spelling of 43712643 in words is "forty-three million, seven hundred twelve thousand, six hundred forty-three".